and in S. Ireland.—B. M. Downs, Sussex ; near Bisley, Sapperton
and St. Vincent Bocks, Bristol, Gloucestershire ; Llanymynach,
Shropshire ; Ayton, Cleveland, Yorkshire ; Craig Tulloch, Perthshire ;
I. of Lismore, Argyll ; near Cork ; Dunkerron, Kerry.
4L V. dolomitica Massal. Gen. Lich. p. 22 (1854).—Thallus
thiu, tartareous-farinose, continuous, greyish- or greenish-white,
often with a tinge of rose-colour, usually limited by a dark line.
Perithecia semi-immersed in pits, the apex protruding, papillate
or truncate ; peritheciai wall entire ; spores rather large, ellipsoid-
ovoid, 0,024-36 mm. long, 0,010-15 mm. thick.—Amplioridium
dolomiticum Massal. Symm. Lich. p. 80 (1855).
Differs from V. integra in the more developed limited thallus and
the deeper pits in which the perithecia are immersed.
Hab. On calcareous and other rooks.—Distr. Rare in E. and
middle England, Central Scotland and S. Ireland.—B. M. Suffolk ;
Derbyshire ; near Bath ; Hartlepool, Durham ; near Edinburgh ;
Dunkerron, Kerry.
42. V. marmorea A. Zahlbr. in Engler & P ra n tl Nat.
Pflanzenf. i. 1*, p. 55 (1903).—Thallus effuse, tartareous,
thinnish, continuous, smooth, pale-rose or rose-purple tinged with
red. Perithecia moderate in size, black, immersed, then slightly
emergent, leaving pits in the stone ; spores ovoid, 0,018 mm. long,
0,009 mm. thick.— V. purpurascens Hoffm. PI. Lich. i. p. 74, t. 15,
flg. 1 (1790). V. rupestris var. purpurascens Schær. Enum.
p. 217 (1850); Mudd Man. p. 292 ; Cromb. Lich. Brit. p. 114.
V. calciseda var. purpurascens Leight. Lich. Fl. p. 428 ; ed. 3,
p. 458. Lichen marmoreus Scop. Carn. ed. 2, ii. p. 367 (1772)
(non With. & non Engl. Bot.).
A doubtful British species. Two specimens have been recorded :
one collected by Mudd at Castle Eden, Durham, without spores,
with a cracked-areolate thallus and no sign of pitting, probably a
form of V. viridula; the other corrected by Parfitt at Exeter I
have not seen.
Hab. On calcareous rooks.—Distr. S.W. and N. England ?
43. V. parva Deakin in Ann. Mag. Nat. Hist. ser. 2, xiii.
p. 33, t. 1, fig. 2 (1854).—Thallus somewhat tartareous, thin,
ashy-grey, continuous, effuse. Perithecia minute, globose, black,
semi-immersed and leaving shallow pits in the rock ; peritheciai
wall entire ; paraphyses mucilaginous, disappearing ; asci oblong-
elliptical about 0,045 mm. long, 0,017 mm. th ick ; spores 8 in
the ascus, ellipsoid, blunt a t the ends, colourless, small, 0,012-17
mm. long, 0,005-7 mm. thick.
Deakin has described and figured the spores as 1-septate, but an
examination of his specimen shows them to be simple with sometimes
disorganized contents that might simulate septation.
Hah. On limestone rooks.—B. M. Torquay, Devonshire (the only
locality).
44. V. calciseda DC. PI. Franc, ii. p. 317 (1805).--Thallus
effuse, thin, tartareous, subpulverulent, white or greyish-white,
often evanescent. Perithecia small, numerous, deeply immersed
in the thallus and the rock beneath, leaving pits in the stone,
the upper p art more or less regularly divided by 4 or 5 fissures;
peritheciai wall dimidiate ; spores ellipsoid, 0,015-21 mm. mng,
0 008-010 mm. thick.—Mudd Man. p. 292 ; Cromb. Lich. B n t.
p. 115; Leight. Lich. Fl. 427; ed. 3,_ p. 458 ( e ^ h var.
purpurascens). V. immersa Hoffm. PI. Lich. i. p. 5b, t. iz,
figs. 2-4 (1790)? Tayl. Fl. Hib. ii. p. 90.
Exsicc. Leight. n. 30 (as F. immersa).
Distinguished by the fissured apex of the perithecia, on account
of which it has been placed by some authors in a separate genus,
Limhoria.
Hab. On calcareous rooks.—Disir. Eather uncommon in S. and
N. England, rare in Scotland, S. and S.W. Ireland.—E. M. Torquay,
Devonshire; Landslip, I. of W ig h t; Laleston near
Glamorganshire; Great Orme’s Head, Carnarvonshire; Buxton,
Derbyshire; Bilsdale, Yorkshire; Morrone, Braemar; near Ooik,
Dunkerron and Killarney, Kerry.
Doubtful or parasitic species.
45. V. Harrimani Ach. Lich. Univ. p. 284 (1810).—Thallus
effuse, tartareous, smooth, mouse-coloured, determinate. Perithecia
minute, black, immersed in the substratum, globose, dimidiate
depressed round the emerging ostiole ; spores ovate, very minute
Hook, in Sm. Engl. Fl. v. p. 153 ; Leight. Angioc. Lich. p. 63,
t. 19, fig. 4 ; Deakin in Ann. Mag. Nat. Hist. ser. 2, xiii. p. 3»,
t. 3, fig. 9 (1854). Lichen Harrimani Sm. Engl. Bot. t. 2639
(1814).” Lithocia Harrimani S. F. Gray Nat. Arr. i. p. 497 (1821).
Specimen not seen.
A doubtful species. Considered by Hepp (Flecht. Eur. n. 691) to
be synonymous with F. Uascens, the spermogoniferous iorm ot
F Hochstetteri, which has not been recorded for the Brffish Isles,
though probably to be found. The minute spores_ indicate the
sp e rn io g lia l character of the perithecia, though Deakm [I. c.) states
th a t asci are present.
Hab. On hard gray calcareous rocks (Torquay, Devonshire;
Durham).
46. V. pulposa Leight. Lich. Fl. p. 427 (1871).--Thallus
chroolepoid or evanescent. Perithecia blackish, subglobose,
pulpóse, polished, prominent; epithecium in d istin c t; peritheciai
wall dimidiate blackish; spores numerous, fuscous, oblong oi
irregularly globose, simple; paraphyses very short ;
hymenial gelatine untinged with iodine.—Leight. Lich. hi. ed. 3,
p. 457. Specimen not seen.
An aberrant and imperfectly described species.
Hab. On old rails near Shrewsbury, Shropshire.